84 MEMOIR OF AUGUSTUS DE MORGAN, 



1836. what I should have done if I had not taken the precaution to 

 bring out with me a large supply of Warren's jet blacking, pre- 

 pared at his manufactory, 30 Strand, the polish of which is so 

 exquisite that I can see the faintest stars in the haziest evenings.' 

 With best wishes, I remain, 



Yours very truly, 



A. DE MORGAN. 

 5 Upper Gower Street, July 10, 1836. 



JST.B. The Southern Hemisphere on the maps looks tolerably 

 empty of nebulae. There is ample space and room enough the 



characters of He 1 to trace, whence it follows that you may 



mark the year and mark the night; that is, dot down nebulae 

 through all the twenty-four hours of R.A., and the year and 

 night will be near enough as to time. Do you not find it 

 an awfully unromantic change to get out of the land of Hercules, 

 Draco, Cepheus, &c., into that of Pyxis Nautica, Cselum 

 Sculptoris, &c. ? If you have to make any new constellations, 

 remember that the president and other officers of the Astrono- 

 mical Society have an official claim. Presses Societatis Astro- 

 nomicae would look pretty ; and a Praes., or ft Secret., would not 

 be amiss in a list of moon culminating stars. 



Please to give my kind regards to Maclear and young 

 Smyth when you see them. Maclear 's paper on the opposition 

 of Mars has reached the Astronomical Society duly, but we wait 

 about printing it till we hear of his observations. Of course 

 you know Bachelier, the mathematical bookseller at Paris. All 

 his stock has been burnt, and that of others at the same time. I 

 wanted Libri's * History of Mathematics ' in July, and find it is 

 all gone in the flames. 



